package com.foo.Servlets;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Properties;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.foo.Entity.RealTimeData;

import com.foo.Entity.TickerInfoData;

import com.foo.Constants.UIMessages;
import javax.servlet.RequestDispatcher;

import com.foo.DataProvider.*;

/**
 * Servlet implementation class RealtimeServlet
 */
public class RealtimeServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	String[] resultString = null;
	Queue queue = null;
	QueueConnectionFactory factory = null;
	QueueConnection connection = null;
	QueueSender sender = null;
	TopicSession session = null;
	String[] data_to_be_passed=null;
	String retrieved_data="";
	MessageConsumer reciever=null;
	
    /**
     * @see HttpServlet#HttpServlet()
     */
    public RealtimeServlet() {
        super();
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	 public void init()
	    {
	    	try
	    	{
	    	Properties props = new Properties();
			props.put(Context.PROVIDER_URL, "jnp://localhost:1099");
			props.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
			props.put(Context.URL_PKG_PREFIXES,"org.jboss.naming:org.jnp.interfaces");
			Context ctx;
			ctx = new InitialContext(props);

			TopicConnectionFactory factory = (TopicConnectionFactory) ctx.lookup("XAConnectionFactory");
			TopicConnection connection = factory.createTopicConnection();
			session = connection.createTopicSession(false, TopicSession.AUTO_ACKNOWLEDGE);
			
			Topic topic = (Topic) ctx.lookup("topic/MyRealTimeTopic");
			reciever = session.createConsumer(topic);
			System.out.println("Client started waiting for Server message");
			connection.start();
	    	}
	    	catch(Exception e)
	    	{
	    	e.printStackTrace();
	    	}
	    }

		/**
		 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
		 */
		protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException 
		{
			HttpSession session = request.getSession(true);
			RequestDispatcher dispatcher;
			RealTimeData tickerdata = null;

			TickerInfoData tickerinfo = null;
			ProviderClient data = new ProviderClient();

			 
			session.setAttribute("realdatareceived","no");
			//get request parameters
			String tickername = request.getParameter("RealTimeCompany");
			System.out.println("Received Request is: " +tickername);
			
			//Validate if all the input string entered
			if((tickername.equalsIgnoreCase("")))
			{
				session.setAttribute("ServerMessage", UIMessages.REQUIRED_FIELD);
				dispatcher = getServletContext().getRequestDispatcher("/realtime.jsp");
				dispatcher.forward(request, response);
			}
			else
			{
				session.setAttribute("ServerMessage",null);
			}
			
			java.sql.Timestamp sqltoDate = new java.sql.Timestamp(System.currentTimeMillis());
			System.out.println("The Date-Time being passed is: " +sqltoDate.toString());

			//data.realtime(tickername,sqltoDate);
			data.getData(tickername, null, sqltoDate, null, null);
			try {
				while (true) 
				{
			    	Message m = reciever.receive(0);
					
			    	if (m != null) 
			    	{ 
			    		if (m instanceof TextMessage) 
			    		{ 
			            TextMessage message = (TextMessage) m; 
			            System.out.println("Reading message: " + message.getText()); 
			            retrieved_data = message.getText();
			            resultString = retrieved_data.split(","); 
			 			int total_size = resultString .length;
			 			System.out.println("the size of data at client end "+ total_size);
			            break;
			    		}	 
			    		else 
			        	{ 
			            break; 
			        	} 
			    	}
				}
				
				}catch (JMSException e) {
					e.printStackTrace();
					dispatcher = getServletContext().getRequestDispatcher("/realtime.jsp");
					dispatcher.forward(request, response);
				}
				
			System.out.println("values length: " +resultString.length);
			
			if(resultString != null)
			{
				for(int i=0;i<resultString.length;i+=9) //i+=9
				{
				if(resultString[i].equals("") || resultString[i] == null)
				{
					System.out.println("No more data to print");
					break;
				}
				else
				{
				tickerdata = new RealTimeData();
				tickerinfo = new TickerInfoData();
				tickerdata.setTicker_symbol(resultString[i]);
				tickerdata.setOpen_value(Double.parseDouble(resultString[i+1]));
				tickerinfo.setCompany(resultString[1+3]);
				tickerinfo.setSector_name(resultString[i+4]);
				tickerinfo.setIndustry(resultString[i+5]);
				tickerinfo.setCountry(resultString[i+6]);
				tickerinfo.setState(resultString[i+7]);
				tickerinfo.setMarket_cap(Double.parseDouble(resultString[i+8]));
				
				session.setAttribute("realdatareceived","yes");
				session.setAttribute("realtimedata", tickerdata);
				session.setAttribute("tickerinfodata", tickerinfo);
				session.setAttribute("timevalue", resultString[i+2]);
				}
				}
			}
			else
			{	
				session.setAttribute("realdatareceived","no");
				System.out.println("No message returned");
			}
			
			System.out.println("Exited Loop");
			dispatcher = getServletContext().getRequestDispatcher("/realtime.jsp");
			dispatcher.forward(request, response);
		}
	}

